Inflating-valve.



No. 637,782. Patented Nov. 28, |899. J. S. HEMENWAY.

INFLATING VALVE. \Appxicarion med Aug. 2s, 189s.)

(No Model.)

Heymann/a UNITED STATES PATENT EEICE.V

JUSTIN SAllIUELHEMENI/FAY, OF RIVER FALLS, WISCONSIN.

lNFLATlNG-VALVE.

srncr'rrcArroN 'forming part of Lettere Patent Ne. 637,782, eieteaNovember 2s, 1899.

Application filed August 23, 1898. Serial No. 689,329. (No model.)

To @ZZ whom it may concern:

Be it known that I, JUSTIN SAMUEL HEM- ENWAY, a citizen of the UnitedStates, residing at River Falls, in the county of Pierce and State ofWisconsin, have invented a new and useful Infiating-Valve, of which thefollowing is a specification.

My invention relates to improvements in inflating-valves especiallyadapted for pneumatic tires; and the object that I have in View is toprovide an improved construction in which the active parts of the valveare made of metal to"obviate decay of the parts and reduce to a minimumthe liability of leakage of air, due to defects in the packingordinarily employed in valves of this character.

A further object of the invention is to provide an improved constructionwhich'renders it unnecessary to make a large opening in the Wheel rim orfelly for the accommodation of the valve-stem, thus retaining to anappreciable extent the initial strength of the rim.

A further object of the invention is to provide an improved constructionin which the active elements of the valve are easily accessible for thedetachment of said valve quickly from the stem,so that in case ofleakage to such an extent as to necessitate repairs or renewal of someof the operative p'arts the entire valve may be detached withoutremoving the stem .from the tire or the tire from the wheel.

With these ends in view the invention consists in the novel combinationof elements and in the construction, arrangement, and adaptation ofparts, as will be hereinafter fully described and claimed.

To 'enable others to understand the invention, I have illustrated apreferred embodiment thereof in the accompanying drawings, forming apart of this specification, and in which- Figure l is a verticalsectional elevation through a rim and tire, illustrating my improvedvalve applied thereto. Fig. 2 is a detail sectional view of the stemwith the valve detached. Fig. 3 is a detail view-of the valveplunger.Fig. 4 is a like view of the bearing-plug. Fig. 5 is an enlargedsectional view of the valve with the parts thereof assembled inoperative relation and with the valve-shell detached from the stem.

.Like numerals of reference denote like and corresponding parts in eachof the several figures of the drawings.

l designates the rim or felly of an ordinary bicycle-wheel, which isprovided with a transverse hole 2, and 3 is an ordinary tire, which isseated on and attached to the rim in any preferred Way. These parts areall ordinary in the art, and hence no novelty therefor is hereinclaimed; but in passing I desire to remark that according to myinvention the hole 2 in the rim is of very small diameter for theaccommodation of a valve-stem. Hence the strengthof the'rim or felly ispreserved.

I employ a tubular stem 4 of small diameter, which is arranged to passthrough the hole 2 in the felly, and on the inner end of this stem isfitted a disk 5, by which the stem may be fastened to the tire, so as tocommunicate with the air space or chamber therein. This attaching-disk 5is preferably of rubber, reinforced on one face thereof by a fabric disk6, and the exposed face of this attaching rubber disk 5 may be united byany suitable rubber cement in an air-tight manner to the tire, so as toprevent leakage of air. The disk 5 and the tubular stem 4 are heldtogether by a thread or wire 7, which is twisted or coiled around aninturned edge 7a at the middle part of the disk 5 in such a .Way as toform an air-tight connection between the central part of the disk 5 andthe stem 4. (See Figs. 1 and 2.)

The tubular stem`4 is of uniform diameter throughout its length, and itis externally screw-threaded. This stem passes through the hole 2 of therim or felly to` project beyond the inner face of the latter for asuitable distance to receive the valve shell or tube, and said stem isheld firmly on the rim by the bearing-plate 8 and the'nut 9. Thisbearing plate has a threaded opening, by which it may be screwed on thestem, so as to press against the disks 5 6 and rest against one face ofthe wheel rim or felly, The nut 9 is screwed on the threaded stem tobear against the opposite face of the rimor felly, and a washer l0 isinterposed between the nut and the felly, all as clearly shown by Fig.l.

The valve in my invention is made separate IOO from the stem 4, so thatit maybe readily detached therefrom when its parts become Worn to suchan extent as to require repairs or renewal of any of the parts. furtherpeculiarity of my valve is 'that all of its parts are made of metal,thus reducing the wear to a'rminimum and obv-iating the employment ofgaskets,which are liable to decay and cause leakage of the valve. Thevalve has a shell or casing 11 in the form of an elongated tube of smalldiameter, and within this shellis Ya longitudinal passage 12, which at`the lower part of the shell is contracted in diameter to produce anannular shoulder or ledge 1:3 be'- tween theY large and small sectionsof the passage 12. The con-tracted part of the passage at the lower endof the valve-shell is internally screw-threaded, as at 14, to 4enablesaid shell to be screwed detachably'to the upper end of the tubular stem4. The enlarged part of the passage 12 in the valve-shell is -in'-ternally threaded, as at 15, thus leaving a plain smooth surface withinthe valve-'shell between the threaded length 15 thereof and -the annularshoulder 13, said smooth length of the passage within the valve-shell'accom-- mod-ating the valve-plunger presently described.

Within the threaded part 15 'of the valveshell is screwed anexternally-threaded bearin`g-plug 16, which is provided in one of itsfaces'v with a transverse notch 17, adapted for the reception of one endof a screw-driver or other implement by which the plug may 'be adjusted,vas required, within the valve-shell. This bearing-plug is designed tolie wholly within the shell and to occupy a stationary' Vorllx'edposition therein with relation 4to the JValve-plunger, and toprovide for the passage which passage terminates in a conical recess -Vl valve-plunger.

vof air through this fixed plug an axial pas-`r sage 1S is formed vinysaid plug, one end of j 19, adapted to form a seat for one end of the eThe valve-.plunger is a single piece of :metal cylindrical lin form andof va length proper -to have a limited reciprocating movement `or l playbetween the upper extremity of the stem 4 and the seat 1-9 of thebearing-plug 16; vbut the valve-shell may be screwed on the stem 4 toycause one end of the Vplunger to fit snugly to the opening iny thetubular stem 4 and its i 4forming Ian annular shoulder 22 Abetween the lheadand the stem. The opposite endfof :the

`other end to `fit in like manner upon 4theseat 19 of the plug 16,whereby both ends of the plunger may be seated firmly against theVster-n and plug to tightly close thek air-pas sage through thevalve-casing. A't lone' end this plunger 20 is enlarged to producea'conical 4head 21, which is of greaterdiameterthan, "the shank or stemof the plunger, lt-hereby stemor shank of the plunger vis lof conical j,fd'rm, asat 23,"and'said'conical end 23fis presented to the upper end ofthe stem 4, while j the conical head 21 is presentedto the'seat 19 i inthe plugl. This plunger 20 is formed with l a series of longitudinalgrooves or channels 24, which open through the enlarged head 21, andsaid plunger is normally lifted or forced towardmthe plug 16 by a coiledspring 25, which is fitted loosely around the'stem of the plunger, so asto have one end thereof bear against the shoulder 22, and its'other endrests upon the shoulder 13 of the valve-shell.

The outerend of the valve-shell is closed by a cap 26, which is formedwith a'threaded tenen 27, adapted to be screwed into the threaded part15 of the shell, and this cap is equipped with a gasket or packing 28,which is interposed between the shoulder of the cap and the end of theshell 11, thus forming a tight joint between vthe cap and shell.

From the foregoing description it will be seen that l have provided animproved construction of valve in-which the' parts are vall containedwithiny a shell that is attached to a stem and lies within thewheel-rim, said valve being entirely independent of the rim. The valveis readily accessi-ble, so that it may be unscrewed from the stem forinspection, Arepairs, or renewal of any of its parts, and the valve isthuscapa-ble of removal `without detach-ing the stem from the tire orremoving the latter from the rim. To vdeflate the tire,

, it is only necessary to unscrew the valve-shell shell, and the shellitself is turned a few times on the stem, sor as to adjust the conicalend 23 oft-he valve-plungeraway from the end of the stem 4. Aninflating-.pump may readily be connected to the shell 11, and the:inflowi-ng current of air'displ-aces the valve-plunger away "from theplug 16, thusv allowing theair to pass readily through the shell and'stem into the tire. The plunger serves as ach-eck- I valve during'the`operation of iniiating the tire, andto-tightly close the valvesubsequent -to the inflation of said 'tire the shell is rog tated =onthe stem until the conical end 23 of the plunger 'andthe conical head 21of said plunger Aare `fitted tightly in the stem 4-and plug 6. Thisadjustment of the :shell .provides'two points of bearing for themetallic valyeagainst 'the stem and the plug, and the plunger is thusadapted to tightly close the valve against the leakage ofair. Dust isprevented lfrom entering'the shell Vby the attachment of the cap lto thethreaded 'part 15 of said-shell. l

I have found byy experiment that, good 'resultslare obtained by theVem'ploymen-tof a stem which does not exceed three-.sixteenths -of 'aninch lin diameter. small stem is advantageous, because `it is notlnecessary in myin'vention to Jprovide ya large hole in therim for fthe'accommodation of the valve. r l f l As Vshow-n by Fig. 1 of thedrawings,,my improved valve isadapted for application `to a double-tubetire,inwhich the attaching means are of special utility, as they providea 'se- The use lof such a IIO cre air-tight connection between the valveand the tire; but I do not restrict the valve to double-tube tires, asthe gist of the invention may be availed of by attaching the stem to asingle-tube tire in a suitable way.

Changes may be made in the form-of some of the parts while theiressential features are retained and the spirit of the inventionembodied. Hence I do not desire to be limited to the precise form of allthe parts as shown, reserving the right to vary therefrom.

Having thus described the invention, what I claim is 1. A valvecomprising members which are respectively xed and adjustable andprovided with seats on their opposing faces, a shouldered valve -plugprovided with airducts and slidably confined in one of said members, anda pressure spring actively fitted to the shouldered valve-plug,substantially as described.

2. A valve comprising members which are relatively ixed and movable,rone of said members being threaded and provided with a spring-seat, aplug adjustable in the thread.

ed member, a valve-plughaving bearing-faces at its respective ends, anda spring fitted on the seat of the valve member and acting against thevalve-plug, substantially as described.

3. A valve comprising members which are relatively xed and adjustable,one member having a spring-seat, a plug adjustable in the other valvemember and having a duct and a valve-seat, a doublefaced valve-plugadapted to the seats of the valve member and the first-named plug, and aspring seated in the adjustable valve member and acting against thevalve-plug, substantially as described.

4. In an inlating-valve, a valve-plunger having the oppositely-facingends, a shoulder within one end face, and channels which open throughthe shoulder and the face at one end of said plunger, combined with astem having a seat for one end of the valve-plunger, a shell adjustableon the stem and provided with a seat for the other end of thevalveplunger, and a spring seated in the shell and against the shoulderof the plunger, substantially as described.

5. In an iniiating-valve, the combination with a stem, of a shellscrewed vto the stem and provided with an internal shoulder or ledge, anapertured plug screwed Within the shell, a double-ended plunger confinedwithin the shell between the stem and the plug, and a spring seated onthe ledge of the shell and acting against the plunger, substantially asdescribed.

6. In an inating-valve, the combination with a stem, of a shell screwedto said stem, an apertured plug screwed within the shell, a plungerhaving the conical ends and the longitudinal channels and confinedwithin the shell between the stem and the plug, and a spring seatedagainst the plunger and the shell, for the purpose described,substantially as set forth.

In testimony that I claim the foregoing as my own I have hereuntoaffixed my signature in the presence of two witnesses.

JUSTIN SAMUEL HEMENWAY.

Witnesses:

F. H. BARNEY, H. E. BLAISDELL.

